Lighting fixture



Aug. 9, 1949.

E. 'R. HUEGEL LIGHTING FIXTURE Filed March 15, 1946 INVENTOR fol/4P0 B Hl/EG'EL ATTORNEY Patented Aug. 9, 1949 UNITED STATES PATENT OFFICE LIGHTING FIXTURE Eduar R- Hostel B klyn, N- s a to Eaoibos h D o i ny, New ilorls, it oorporotioo of w lo k Application March 15, 1946, Serial No. 654,716

(on. was) 3 Globes- 1 h sent invent Qn relat s to lighting fix Wrss and is m a t u arl directed to ard such fixtures adapted for wall mountin and to produce indirect lighting.

lhe present invention contemplates the en;- o yment of a projector type amp bu bs mo n ed on an axis about $5 to the horizontal, base down. Such lamps have an annular reflector which projects the dominant beam along the axis of the lamp for flood or spot lighting and allows the escape of direct light through an angle oi about 115- about the lamp axis. The light emitting face of the lamp is flattened and etched to render it difiusing. While such a lamp mounted in this position is well adapted to be a source of indirect light, it is unsuited for use hare, for con-.- siderable of the direct light is at such low angles as to strike very remote ceiling areas and ope posite wall areas, also direct light as well as scattered light from the etched surface is at such low angles as to be in the normal field of vision.

The present invention contemplates fixtures wherein the lamp bulb is received in an enclosure which not only provides an ornamental appear: ance to the unlighted fixture, but also, without substantially interferring with the escape of the reflected beam, provides for the screening of all light rays below the horizontal through the top of the lamp, and allows the escape of direct light below the reflected loeam,

According to the present invention the direct light is so controlled as to reduce the light emitted toward the adjacent or supporting wall a to Pro i e a m nimum o b o s l s o he all:

"Th vo on so ins drawing sh o res f i ustrat ng" the prese t in ent n, an embodiment in which the invention may 13. 5? form i bein understood ho draw ng a u r t o i the. invention ra her t an lim tin the same.

in these drawings;

F u 1 is a ver i a soo ionol View h ugh a lighting fixture talgen in planes at right angles o h Well on wh ch i is s ppor ed;

Fi e 2 s o t ou d ot ona ie h or s in oo o n th lino 2:2 o Figures a d 3;'

Figure 3 is a top plan View with parts in section;

ss. a o seso i o e o a mal soa s l ti g a fi ure it ap ears st o dinary an le of obs rvation;

Figure 5 is a diagrammatic view illustrating t o iti ng of the he w l r la i e to the o lissiaod F gu e 6 is a d ramm ic V ew il strating the e io o the soili g illum nat by th fix u In the drawings a supporting wall is indicated at it} and ceiling at ll. The fixture is mounted on the wall so as to be above the ord n ry l of is o an a suitab d stanoo belo the ceilin As shown n t d a ings h fixtu e "b dy I2 is in he form of oostius Ih costing h n rnamen al top Portion L and an ornamental low r port n 1 Whioh ex end o w rd fr m e well this rtion 4 ror iod i Walls od -1 b an fro Wal 0- Th upper d es i t e wal s id, Mb and Mo a d the l wer ed e o he t port on h ve oonfisor t on w h Places h m n the suirw ao o o sph struck fr m t o sen e l 5,-

il s ost n eceives a spu me l b i2; Pr f srs l o s he ica o n o r ha in s ce t a It and adapted to be secured to the castin by scre s indic ed s -V2.

bow ca i a an le br olsst ,2? hich sup orts .o amp s ke 23 o an oasis o subs antially 5" to th ve tical. This socket is adapted to support a projector ty e inc ndes ent lam 25 as th 3 0 wa t B floo or R40 s ot lamp Th l m has o onosnt a od fi m n indi ootod at 2 a ene al porobo o rso o o -nor= tion ,2 wh oh i l roi ot a so oent o m f l ht upwards i h its a is a 5 to tho ho tzoo lthe mo th o tho sfiso r indioo at 28 n he e the lam als l m ts dir ot l ht n a som o a an le de er-mined b the P o o the fi ame t and t mou h of e e fi o or- Th nd o the lamp is f a en d vas indi cat d and etched at 8 The ojected bea o ligh r y o moderate di o snoo i indica ed at dash l n 3 The irec gh i n i a ed by l d lines and the an le o p a of the cone. of direct l gh is indi a d as about 15?.- he di u d and s a t e ig t irom e en of t bulb i in ioo o by s ort rr w o' in s 2..-

The concentrated beam of reflected light indis d e by the r y 39 is ir otsd to rd n e]- ip a 34 on t e c ili as indicated. i u e 6- The extreme up e direct rays such a ray H are sli htly past the. zenith and will ike the sup rtin wall some distance above his fix r ho lowermost dir ct. s s such as 3 b). are bo w the hor zontal and i he lamp were used in this position without any enclosure he d r ct i ht would spread across the ceilin and n nto any o po te side wall, a d, in ane ace t the norm l to the suppor in ell: wou d ontinue down below the horizontal, Also, the end of the lamp would scatter light throughout somewhat more than a hemisphere, so that from whatever angle the lamp were likely to be viewed, the bright end of the lamp would be in the line of vision.

According to the present invention the bowl 20 which receives the lamp, is designed to control the light which would be otherwise emitted in unwanted directions. The portion of the bowl 2! between the vertical axis 22 passing through the center l5 and the fixture body is slightly deeper than the hemisphere so that the extreme upper surface of the lamp bulb is below the upper edge 35 of this portion of the bowl. The front half of the hemispherical spinning employed in making the bowl is cut back as indicated at 35 to be in a plane at right angles to the wall, at an angle of approximately above the horizontal through the light center. This portion of the bowl receives direct light rays below the horizontal and above the horizontal up to the cutoff line provided by the upper outer edge of the front of the bowl and reflects such of these light rays as are not absorbed,

The lateral opening in the hemispherical bowl, formed by cutting away the upper front portion of it, is occupied by two louvers 3! and 3B. These louvers are made of metal and the upper louver is on edge toward the center of the lamp. The upper edge 39 of the upper louver is on the same level of the upper edge of the bowl and its lower edge 46 is even with the upper edge 41 of the lower louver. The lower louver is for manufacturing reasons, made like the upper louver. The angle of these louvers in the plane of Figure 1, is approximately 32. Owing to the fact that the light center 26 is here shown as oifset from the vertical 2-2 through the center [5, the baffles 31 and 38 are not true cones but are generally conical. They are slightly steeper as they approach the wall as indicated in Figure 2. These louvers may be fastened to the bowl in any suitable manner, the details of which are omitted from the drawings.

The louvers permit a very large portion of the direct and reflected light from the lamp to pass outwardly at angles above 20 above the horizontal and reach portions of the ceiling beyond the more brightly lighted area 34. The light rays, however, do not extend over onto extremely remote ceiling areas or onto the opposite side wall. Also, all scattered light emitted by the lamp at angles below the horizontal is intercepted by either the baffles or the upper part of the hemispherical bowl so that no matter in what azimuth one views the fixture in positions below the upper edge of the bowl, no sources of brightness exist except the lower surfaces of the louvers 31 and 38. The brightness of these may be controlled by suitably darkening the upper surface of the lower baffle and the lower surface of the outer part of the bowl which would reflect light onto the lower baflie.

Not only are there no annoying bright elements in view, but the arrangement shown is one which reduces the amount of light emitted on the wall side of the vertical, so as to be capable of falling on the adjacent side wall. The only light which can strike the side wall immediately above the fixture is that which is diffusely transmitted from the upper part of the etched surface of the bulb. A small amount of direct light strikes the ceiling some distance above the fixture so that the annoying bright back splash of light ordinarily obtained from wall fixtures is substantially reduced.

Since it is obvious that the invention may be embodied in other forms and constructions within the scope of the claims, I wish it to be understood that the particular form shown is but one of these forms, and various modifications and changes being possible, I do not otherwise limit myself in any way with respect thereto.

What is claimed is:

1. A luminaire comprising a projector type lamp having a reflector to project light in a narrow concentrated beam and positioned to allow the escape of direct light through a cone with an apex angle of substantially the end of the bulb of the lamp beyond the reflector being 'fiattened and having a light diifusing etching,

means for mounting the lamp with its axis at substantially 45 to the horizontal, a bowl in which the lamp is received, the bowl being of generally hemispherical shape with its upper edge slightly above the top of the lamp and its deepest part slightly below the bulb of the lamp, the upper forward portion of the bowl being removed to provide a lower front edge, and louvers generally conical about a vertical axis in front of but adjacent the filament of the lamp and above and in front of the bulb and of the same outside radius as the top of the bowl for permitting escape of direct light at angles above the horizontal and cutting oif light below the horizontal which would otherwise escape over the lower front edge of the bowl.

2. An indirect lighting fixture mounted adjacent a vertical wall and having a projector lamp mounted on an axis at substantially 45 to the vertical so that the projected beam is receivable on the ceiling in a generally elliptical area whose center is distant from the wall substantially the distance the fixture is below the ceiling, the lamp also delivering direct light in a wide angle cone about the projected beam such that direct light is received on the upper portion of the adjacent side wall, on the ceiling about the elliptical area, and is emitted at angles too low to reach the ceiling and in the normal line of vision, and an upwardly opening bulb enclosure including an opaque bowl which extends about the bulb in all azimuths, up to the level of the top of the bulb in a substantially zone on the side toward the wall and up to a level substantially 20 above the horizontal through the light source in the front 180 zone to provide a 20 cut-off angle for direct light therein, and a plurality of louvers occupying the region between substantially said cut-ofi angle and up to a level slightly above the uppermost part of the lamp, the louvers being edgewise to the light center of the lamp and acting in said zone at all angles below the horizontal, to screen parts of the lamp not screened by the bowl.

3. An indirect lighting wall type lighting fixture having a housing for mounting on a vertical wall surface, an incandescent lamp socket fixedly carried by the housing with its axis substantially 45 above the horizontal, a socket carried incandescent lamp having a filament spaced substantially from the wall, a parabolic reflector for projecting reflected light toward the ceiling at substantially 45 above the horizontal, the lamp having a flattened diifusing end across the mouth of the reflector for transmitting direct and reflected light and providing a corresponding projected area of brightness when viewed horizontally, the mouth of the reflector being so spaced from the filament that direct light escapes in a cone of substantially greater than 90, whereclosure of a vertical depth to receive the reflector V and diffusing mouth of the lamp and screen the mouth of the lamp at all azimuth angles up to the horizontal through the top of the lamp, the upper portion of the front of the enclosure including conical louvers occupying a horizontal angle of substantially 180 about a vertical axis in front of but adjacent the lamp filament and a depth equal to substantially one-half the vertical depth of the difiusing end of the sloping lamp, the enclosure being opaque below and to the rear of the louvers, and wherein the top of the front opaque portion of the enclosure is sub- 6 stantially 20 above the horizontal through the filament.

EDUARD R. HUEGEL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,197,187 Crownfield Sept. 5, 1916 2,179,161 Rambusch et al Nov. 7, 1939 2,267,776 Lezebnick Dec. 20, 1941 FOREIGN PATENTS Number Country Date 742,481 France Dec. 27, 1932 

